Laptop computer with a back to back display

Abstract

A back-to-back dual display laptop notebook computer enables a presenter and recipient passive viewers sitting opposite to each other to simultaneously view the back-to-back display through a master display and a slave display, respectively, with master and slave display units selectively switched off for use as a normal laptop computer, or for use of the slave display independently by switching the slave display to be upside down.

1 - 5 . (canceled) 
     
     
         6 . An apparatus for constructing an integrated back-to-back display screen laptop computer, the apparatus comprising:
 first and second thin-film transistor liquid crystal display (TFT LCD) units fixed back-to-back to form a single flipbook configuration of the laptop computer, wherein each TFT LCD unit includes:
 a display graphic processor originating transmission minimized differential signaling (TMDS) signals for generating a displayed respective image; 
 a low voltage differential signaling (LVDS) drive buffer circuitry for buffering the TMDS signals and for driving the TFT LCD to display the respective image; 
 a TFT LCD signal interface connector end for communicating TMDS signals between the first and second TFT LCD units; and 
 a impedance matching terminator provided at each of the TFT LCD signal interface connector end; and 
   an electromagnetic interference (EMI) shield positioned in between the display TFT LCD units;   wherein the communicating of TMDS signals between the first and second TFT LCD units causes each displayed image on the first and second TFT LCD to be a common image.   
     
     
         7 . The apparatus of  claim 6 , further comprising:
 a Random Access Memory Digital-to-Analog Converter (RAMDAC) included in at least one of the first and second TFT LCDs;   wherein the first TFT LCD unit is driven by LVDS signals from its respective display graphic processor to display a first image; and   wherein the second TFT LCD unit is driven from the output of a RAMDAC to display to display a second image different from the first image.   
     
     
         8 . The apparatus of  claim 6 , further comprising:
 an independent cold cathode fluorescent lamp (CCFL) inverter switch provided for each TFT LCD unit to control the respective TFT LCD unit to be used as one of a single screen, a dual screen, or a tablet computer.   
     
     
         9 . The apparatus of  claim 6 , further comprising:
 a non-obstructive transparent protective cover affixed permanently at least one of the first and second TFT LCD display units.   
     
     
         10 . The apparatus of  claim 6 , wherein the first TFT LCD display unit operates as a master display unit presenting a first image; and
 wherein the second TFT LCD display unit operates as a slave display unit presenting a second image identical to the first image.   
     
     
         11 . An integrated display screen laptop computer comprising:
 a processor for generating display signals; and   first and second display units connected to the processor, with the first and second display units oriented at an angle for displaying identical images generated from the display signals, wherein the identical images are viewable at different orientations.   
     
     
         12 . The integrated display screen laptop computer of  claim 11 , wherein the angle is 180°, whereby the first and second display units form a back-to-back display configuration. 
     
     
         13 . The integrated display screen laptop computer of  claim 11 , wherein the angle is about 180°. 
     
     
         14 . The integrated display screen laptop computer of  claim 11 , wherein the angle is greater than 90°. 
     
     
         15 . The integrated display screen laptop computer of  claim 11 , wherein the processor includes a control switch for controlling the first and second display units. 
     
     
         16 . The integrated display screen laptop computer of  claim 15 , wherein the control switch includes an OFF switch for switching off a selected one of the first and second display units. 
     
     
         17 . The integrated display screen laptop computer of  claim 16 , wherein a first display unit operates as a master display unit presenting a first image; and
 wherein the second display unit operates as a slave display unit presenting the first image; and   wherein the OFF switch switches off only the second display unit.   
     
     
         18 . The integrated display screen laptop computer of  claim 15 , wherein a first display unit operates as a master display unit presenting a first image in a first orientation; and
 wherein the second display unit operates as a slave display unit presenting a second image identical to the first image in the first orientation; and   wherein the control switch includes an image inverting switch for inverting the second image presented on the slave display unit to be in a second orientation upside down relative to the first orientation.   
     
     
         19 . A method for displaying images at different viewable orientations using a laptop computer, the method comprising the steps of:
 providing the laptop computer with a processor and first and second display units connected to the processor;   generating display signals from the processor; and   displaying identical images generated from the display signals on the first and second display units; and   orientating the first and display units at an angle, thereby presenting the identical images at different viewable orientations.   
     
     
         20 . The method of  claim 19 , wherein the angle is 180°, whereby the first and second display units form a back-to-back display configuration. 
     
     
         21 . The method of  claim 19 , wherein the angle is greater than 90°. 
     
     
         22 . The method of  claim 19 , further comprising the step of:
 providing a control switch on the processor for controlling the first and second display units.   
     
     
         23 . The method of  claim 22 , wherein the control switch includes an OFF switch for switching off a selected one of the first and second display units. 
     
     
         24 . The method of  claim 23 , wherein a first display unit operates as a master display unit presenting a first image; and
 wherein the second display unit operates as a slave display unit presenting the first image; and   wherein the OFF switch switches off only the second display unit.   
     
     
         25 . The method of  claim 23 , wherein a first display unit operates as a master display unit presenting a first image in a first orientation; and
 wherein the second display unit operates as a slave display unit presenting a second image identical to the first image in the first orientation; and   wherein the control switch includes an image inverting switch for inverting the second image presented on the slave display unit to be in a second orientation upside down relative to the first orientation.